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2 SheetsShet 1.

(No Model.)

J. W. VAN DYKE.

STEAM GENERATOR.

Patented Apr. 7, 1885.

MAM lfia 9% N. PETERS. Phnlu-Lhhogmphun Washmglnn, 11c.

(No Model.) Sheets-Sheet 2.

J, W. VAN DYKB.

STEAM GENERATOR.

No. 315,190. a Patented Apr. 7, 1885.

N. PETER$ PhnXb-Lilhvgmphar, Washillglon. D. c.

NI'IED STATES PATENT ()rrrce.

JOHN \V. VAN DYKE, OF BROOKLYN, NEW YORK.

STEAM-GENERATOR.

SPECIFICATION forming part of Letters Patent No. 315,190, dated April 7,1885.

Application filcd July 16, 1884.

T 0 aZZ whom it may concern:

Be it known that I, JOHN XV. VAN DYKE, of the city of Brooklyn, county of Kings, and State of New York, have invented a new and useful Improvement in Steam Generators, Boilers, or ater-Heaters, of which the following is a full, true, and exact description, reference being had to the accompanying drawings.

My invention relates to that class of generators which are sometimes called pipe or tube boilers, and in which the steam or water circulates back and forth within tubes extending longitudinally through or over the fire or heating-surface, and in which said tubes enter headers or connections located at the ends of the boilers, and connecting two or more of such tubes together. An illustration of this class of generators will be found in a patent granted to me on the 27th day of N ovember, 1883, No. 289,322, for steam-boiler, and in a patent granted to me on the 27th day of November, 1883, No. 289,183, for steamgenerator. I refer to these patents as showing the general arrangement of pipes or tubes in such boilers.

My invention relates, specifically, to that part of the boiler called the header-that is, the means of connecting one tube to another tube, so that the water or water and steam passing from one tube may be delivered into another tube. In order to accomplish this result properly, it is important that the header be provided with sufficient room or area within itself, so as not to prevent the proper circulation of the water, and it is likewise advisable that the interior of the header opposite the ends of the pipes be curved in shape, so as to present as few angles or obstacles to the circulation of the water as may be easily done. By my arrangement, likewise, it will be observed that the headers are very cheaply made, and require the least possible amount of metal in proportion to the strength required which can be obtained in structures of this class. By my invention I make a fiat header which is provided with independent chambers whose section is preferably curvi linear, and which chambers are so located with reference to the pipes as to permit of a cir- (No model.)

culation of water within the chambers, which serve likewise to connect the ends of the pipes or tubes.

In the headers heretofore in use a continuous chamber has been employed, the outer surface of which has, generally speaking, been a plane-that is to say, the separation between the different rows of tubes, or between the tubes in such chambers, has been accomplished by internal partitions. Independent chambers separately cast in the covers of continuous headers for connecting pairs of tubes together have not, so far as I know, been employed. That which I claim to be newin my invention will be distinctly pointed out in the claims hereto annexed.

My invent-ion will be readily understood from the accompanying drawings, in which similar letters refer to similar parts.

Figure 1 represents avertical section through Fig. 2 on the line 00 a1, and is a horizontal sec tion through a horizontal header shown as ineluding sixteen pipes or tubes. The cover of the header is shown on the right. Fig. 2 is a plan View of my header, the right side being covered with the cover and the left side being uncovered. Fig. 3 is a section through Fig. 2 on the line i 1 showing the pipes or tubes in position. Figs. 4, 5, and 6 represent corresponding views with Figs. 1, 2, and 3 ofaslightly-difi'erent modification of my header, in which the chambers are partly in the cover and partly in the tube-sup porting plate, upon which the header-cover is bolted. Fig. 4 represents a section through Fig. 5 on the line 15 t. Fig. 5 represents a plan View of my header, the part to the right being covered with the cover, the part tot-he left being un covered. Fig. 6 represents a section through Fig. 5 on the line 8 8. Figs. 7, 8, and 10 represent my invention as applied to a double upright header. Fig. 7 represents a plan view, the lower part being covered with the cover and the upper part being uncovered. Fig. 8 is a section through Fig. 7 on the line 3 s. Fig. 10 is a section through Fig. 7 on the line 1) 1:. Figs. 9, 11, and 12 represent Views of my invention as applied to a single upright header. Fig. 11 shows a plan view of such header, the lower part being :covered. Fig.

9 isa section through Fig. 11 on the line to 20. Fig. 12 is a section through Fig. 11 on the line 2 z.

The structure shown in Figs. 4, 5, 6, 7, S, and 10 is particularly applicable to structures in which the pipe-supporting plate is made of cast-iron, while the structure shown in Figs. 1, 2, 8, 9, 11, and 12 is applicable especially to structures in which wrought-iron is substituted for cast-iron in such constructions.

A represents the pipe-supporting plate forming part of the header, into which the pipes or tubes are preferably expanded, or otherwise fastened in the well-known way. Plates are provided capable of sustaining two or more tubes. When these plates are of wrought-iron, I form them as shown in Figs. 1, 2, 11, and 12, simply cutting through these flat plates holes for carrying the pipes. Vhen, however, they are made of cast-iron, I preferably strengthen them by making the metal thicker in the parts through which the water is not to circulate. In the structures as shown in Figs. 4 and 5, for instance, the casting is so made as to leave a chamber within the metal corresponding to a chamber within the cover, and the metal at these points is thinner than it is at other points. Such chambers are represented at E, the partitions or separations between them being represented by D.

' The arrangement of-my cover is shown clearly in Figs. 1 and 2. Chambers corresponding in number to each pair of pipes are cast within a header, otherwise flat, which correspond with the pipe-plate beneath it. These chambers B B B are so arranged as that each of them will cover a pair of pipes or tubes beneath it. The arrangement shown in Figs. 4, 5, and 6 is the same, excepting that the chambers B need not be quite so deep, because the circulating-space is partially allowed for in what I have called the pipe-plate. In Figs. 7 and S the headers are arranged vertically instead of horizontally, and in this case a partition, F, is provided, separating each pair of tubes from the one adjacent horizontally. In this form two pairs of tubes are arranged side by side in a single header. In the form shown in Figs. 11 and 12 the tubes are arranged Vertically in pairs over each other, and my invention is equally applicable to all these forms, and it may in some instances be applied to a header containing but two pipes; but I prefer the forms shown. My header-covers are fastened upon the plates beneath, forming a completed header, by means of screw-bolts G G G or other appropriate means. Vhen these bolts are removed, the covers may be taken from the ends of the pipes or tubes, leaving their ends exposed for cleaning or repair. It

is obvious, likewise, that I do not limit myself to the particular form of circulating-chambers cast in the flat cover, though I prefer those shown. It is important that the upper ends of these circulating-chambers should correspond with the upper sides of the pipes or tubes, in order to prevent the lodgment of air or steam there.

Excepting as specified in the claims, I do not limit myself to the specific forms or proportions shown.

lVhat I claim as my invention, and desire to secure by Letters Patent, is

1. A header for boilers, which consists of a pipe or tube supporting plate having a series of holes arranged therein in pairs, and a cover constructed to form a partition between adjacent pairs of tubes, and provided with independent chambers above the general surface of the cover, and each corresponding in position with one pair of tubes, thereby allowing of independent circulation between each pair of tubes beneath said cover, substantially as described.

2. A header for boilers, which consists of a pipe or tube supporting plate provided with partitions and holes arranged in pairs, and with chambers or depressions in said plate surrounding said pairs of pipes or tubes, and separating each pair from the adjacent pair, and a cover adapted to fit said plate, and provided with corresponding chambers projecting above the surface of the cover, and cone sponding in shape with the chambers in the plate below, and adapted, in combination with the plate below, to separate each pair of tubes or pipes from the adjacent pair, substantially as described.

3. Aheader for circulating pipe or tube boilers, which consists of a pipe or tube supporting plate provided with partitions and holes arranged in pairs, for supporting such pipes or tubes, and a cover provided with a flat under surface adapted to form a joint with the plate beneath, and with a chamber or chambers covering each pair of tubes, each chamber being separated from the next chamber by the fiat portion of the cover, substantially as described.

4. In combination with the pipeplate A, the cover fitting thereon, and provided with independent chambers B B B, separated by partitions, and each corresponding with one pair of holes in the plate below, and with screwbolts G, for fastening said cover on the plate below, substantially as described.

JOHN W. VAN DYKE.

lVitnesses:

CHARLES HENSCHEL, J r., JOHN G. NEUBAUER. 

